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Sequence signatures of a recent chromosomal rearrangement in Drosophila mojavensis.

Publication ,  Journal Article
Runcie, DE; Noor, MAF
Published in: Genetica
May 2009

The X-chromosome inversion, Xe, distinguishes Drosophila mojavensis and D. arizonae. Earlier work mapped the breakpoints of this inversion to large intervals and provided hypotheses for the locations of the breakpoints within 3000-bp intergenic regions on the D. mojavensis genome sequence assembly. Here, we sequenced these regions directly in the putatively ancestral D. arizonae X-chromosome. We find that the two inversion breakpoints are near an inverted gene duplication and a common repetitive element, respectively, and these features were likely present in the non-inverted ancestral chromosome on the D. mojavensis lineage. Contrary to an earlier hypothesis, the inverted gene duplication appears to predate the inversion. We find no sequence similarity between the breakpoint regions in the D. mojavensis ancestor, excluding an ectopic-exchange model of chromosome rearrangements. We also found no evidence that staggered single-strand breaks caused the inversion. We suggest these features may have contributed to the chromosomal breakages resulting in this inversion.

Duke Scholars

Published In

Genetica

DOI

EISSN

1573-6857

ISSN

0016-6707

Publication Date

May 2009

Volume

136

Issue

1

Start / End Page

5 / 11

Related Subject Headings

  • X Chromosome
  • Models, Genetic
  • Genome, Insect
  • Genetic Variation
  • Gene Rearrangement
  • Evolutionary Biology
  • Drosophila
  • DNA Transposable Elements
  • Chromosome Inversion
  • Chromosome Breakage
 

Citation

APA
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ICMJE
MLA
NLM
Runcie, D. E., & Noor, M. A. F. (2009). Sequence signatures of a recent chromosomal rearrangement in Drosophila mojavensis. Genetica, 136(1), 5–11. https://doi.org/10.1007/s10709-008-9296-0
Runcie, Daniel E., and Mohamed A. F. Noor. “Sequence signatures of a recent chromosomal rearrangement in Drosophila mojavensis.Genetica 136, no. 1 (May 2009): 5–11. https://doi.org/10.1007/s10709-008-9296-0.
Runcie, Daniel E., and Mohamed A. F. Noor. “Sequence signatures of a recent chromosomal rearrangement in Drosophila mojavensis.Genetica, vol. 136, no. 1, May 2009, pp. 5–11. Epmc, doi:10.1007/s10709-008-9296-0.
Journal cover image

Published In

Genetica

DOI

EISSN

1573-6857

ISSN

0016-6707

Publication Date

May 2009

Volume

136

Issue

1

Start / End Page

5 / 11

Related Subject Headings

  • X Chromosome
  • Models, Genetic
  • Genome, Insect
  • Genetic Variation
  • Gene Rearrangement
  • Evolutionary Biology
  • Drosophila
  • DNA Transposable Elements
  • Chromosome Inversion
  • Chromosome Breakage